Lun Nanzhi ends up in the world of a novel she read, she dresses up in a cruel woman's costume and her mission is to make the female protagonist Chenxi happy so she can return home. But it seems that there is something wrong, some characters seem to have gone back in time and in the past timeline her character was different from what she read, and little by little Nanzhi begins to realize that the characters somehow treat her differently from how she treated in the novel...But what is happening? Was this all a mistake?